Here's an interesting paper on the topic for epsilon-delta proofs: https://arxiv.org/pdf/1701.05187 https://arxiv.org/pdf/1701.05187 Also see Table 2 of this

Here's an interesting paper on the topic for epsilon-delta proofs: https://arxiv.org/pdf/1701.05187 https://arxiv.org/pdf/1701.05187 Also see Table 2 of this older paper for limit thinking in general: https://u.math.biu.ac.il/~katzmik/sullivan76.pdf https://u.math.biu.ac.il/~katzmik/sullivan76.pdf